unit uRptFacturasCliente_Server;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, frxClass, frxDBSet, uDAScriptingProvider,
  uDADataTable, uDACDSDataTable, DB, uDAClasses, frxChart, frxGradient,
  frxChBox, frxCross, frxOLE, frxBarcode, frxRich, uDABINAdapter, uROTypes,
  uDAInterfaces, uDADataStreamer, IBCustomDataSet, IBQuery, IBDatabase;

type
  TRptFacturasCliente = class(TDataModule)
    DADataCabecera: TDADataSource;
    DADataDetalles: TDADataSource;
    tbl_FacturaCliente: TDACDSDataTable;
    tbl_DetallesFacturaCliente: TDACDSDataTable;
    frxDBCabecera: TfrxDBDataset;
    frxDBDetalles: TfrxDBDataset;
    DADataVencimientos: TDADataSource;
    tbl_Vencimientos: TDACDSDataTable;
    frxDBDataset1: TfrxDBDataset;
    schReport: TDASchema;
    DataDictionary: TDADataDictionary;
    frxReport: TfrxReport;
    frxBarCodeObject1: TfrxBarCodeObject;
    frxOLEObject1: TfrxOLEObject;
    frxCrossObject1: TfrxCrossObject;
    frxCheckBoxObject1: TfrxCheckBoxObject;
    frxGradientObject1: TfrxGradientObject;
    IBDatabase1: TIBDatabase;
    IBTransaction1: TIBTransaction;
    DataSource1: TDataSource;
    DataSource2: TDataSource;
    cabecera: TIBQuery;
    detalles: TIBQuery;
    procedure DataModuleCreate(Sender: TObject);
  private
    FConnection: IDAConnection;
    //Genera cada una de las facturas a imprimir
    procedure GenerarFactura(const ID: integer); overload;
  public
    function GenerarFactura(const AFacturaID : String): Binary; overload;
  end;

implementation

{$R *.dfm}

uses
  uDataModuleServer, schFacturasClienteClient_Intf;

const
  rptFacturaCliente = 'InfFacturaCliente.fr3';

  { Dataset names for schReport }
  ds_InformeFacturasCliente = 'InformeFacturasCliente';
  ds_InformeFacturasCliente_Detalles = 'InformeFacturasCliente_Detalles';
  ds_InformeFacturasCliente_Vencimientos = 'InformeFacturasCliente_Vencimientos';  


{ TRptFacturasCliente }


procedure TRptFacturasCliente.DataModuleCreate(Sender: TObject);
begin
  schReport.ConnectionManager := dmServer.ConnectionManager;
  FConnection := dmServer.DarNuevaConexion;
  frxReport.EngineOptions.NewSilentMode := simReThrow;  
end;

function TRptFacturasCliente.GenerarFactura(const AFacturaID: String): Binary;
var
  ID_Facturas: TStringList;
  i: Integer;

begin
  Result := Binary.Create;
  FConnection.BeginTransaction;

  try
    ID_Facturas := TStringList.Create;
    ID_Facturas.CommaText := AFacturaID;

    //Vamos generando todos y cada una de las facturas recibidas
    for i := 0 to ID_Facturas.Count - 1 do
        GenerarFactura(StrToInt(ID_Facturas.Strings[i]));

    frxReport.PreviewPages.SaveToStream(Result);

  finally
    FConnection.RollbackTransaction;
  end;
end;

procedure TRptFacturasCliente.GenerarFactura(const ID: integer);
var
  AStream: TMemoryStream;
  dsMaster: IDADataset;
  dsDetail: IDADataset;
  dsVencimientos : IDADataset;
begin
  AStream := TMemoryStream.Create;

  try
    dsMaster := schReport.NewDataset(FConnection, ds_InformeFacturasCliente, ['ID'], [ID]);
    dsDetail := schReport.NewDataset(FConnection, ds_InformeFacturasCliente_Detalles, ['ID_FACTURA'], [ID], False);
    dsVencimientos := schReport.NewDataset(FConnection, ds_InformeFacturasCliente_Vencimientos, ['ID_FACTURA'], [ID], False);

{    AStream.Clear;
    DABINAdapter.WriteDataset(AStream, dsMaster, [woRows, woSchema], -1);
    DABINAdapter.ReadDataset(AStream, tbl_FacturaCliente, TRUE, '', TRUE, TRUE);

    AStream.Clear;
    DABINAdapter.WriteDataset(AStream, dsDetail, [woRows, woSchema], -1);
    DABINAdapter.ReadDataset(AStream, tbl_DetallesFacturaCliente, TRUE, '', TRUE, TRUE);

    AStream.Clear;
    DABINAdapter.WriteDataset(AStream, dsVencimientos, [woRows, woSchema], -1);
    DABINAdapter.ReadDataset(AStream, tbl_Vencimientos, TRUE, '', TRUE, TRUE);}


    frxReport.LoadFromFile(DarRutaInformes + rptFacturaCliente, True);
    frxReport.PrepareReport(False);

  finally
    AStream.Free;
    dsMaster := Nil;
    dsDetail := Nil;
  end;
end;

end.